用于机器视觉的双远心透镜 (1)双远心透镜能够在整个景深范围内提供不变的放大率 (2)可选放大率:0.051X, 0.128X, 0.243X, 0.528X, 1.00X 或者 2.00X (3)兼容带可达2/3英寸探头的C型安装相机 (4)每个透镜都带各自的测量和性能数据一起发货 Thorlab已经和Navitar公司合作设计一系列机器视觉应用下的远心透镜。有了双远心透镜,物空间和像空间的放大率就都不取决于在视场中的距离(景深范围内)或者位置。这个特点非常适合机器视觉应用:在测量面积时,一个远心透镜能不用考虑物距或位置的变化,得到相同的测量结果。关于远心透镜的详细信息以及它们和标准透镜的区别,请见远心透镜教程标签。 Thorlabs供应0.128X和0.528X两种放大率的远心透镜。每一个透镜都有一个可变光阑改变f/#值。此类透镜设计用于2/3英寸探头,比如科学CCD相机上的探头。其它CCD和CMOS相机中小于2/3英寸的探头也能使用此类透镜,但是视场有所减小(其它规格探头的视场值可以在规格标签中找到)。透镜外壳的外边带有C型安装(1.000英寸-32)螺纹,也兼容我们的相机。使用SM1A10螺纹适配器,C型安装能连接上内或外SM1(1.000英寸-40)螺纹使之兼容我们的透镜套筒或其他SM1螺纹安装座。 每一个透镜都有详细测试报告展,给出准确规格和透镜图表;下表中可获取PDF报告示例。图表展示的典型性能有场曲率、畸变、相对照度和调制转移函数(MTF),详见上面的曲线标签。 请注意,由于MVTC23005和MVTC23013的大小和重量,用户必须小心地适当安装并支撑这些透镜。MVTC23005b Depth of Field for MVTC23005 0.051X Telecentric Lens f/# Depth of Field 7.7±260 mm11±370 mm16±540 mm22±740 mmField of View for MVTC23005 0.051X Telecentric Lens Sensor Format Field of View (Full) 1/3"118 mm1/2"156 mm1/1.8"174 mm2/3"214 mmMVTC23013Depth of Field for MVTC23013 0.128X Telecentric Lens f/# Depth of Field 6.2±15 mm12±25 mm18±40 mm22±50 mmField of View for MVTC23013 0.128X Telecentric Lens Sensor Format Field of View (Full) 1/3"47.0 mm1/2"62.7 mm1/1.8"70.0 mm2/3"86.2 mmMVTC23024Depth of Field for MVTC23024 0.243X Telecentric Lens f/# Depth of Field 6.5±11 mm12±20 mm18±30 mm22±37 mmField of View for MVTC23024 0.243X Telecentric Lens Sensor Format Field of View (Full) 1/3"24.7 mm1/2"32.9 mm1/1.8"37.0 mm2/3"45.2 mmMVTC23053Depth of Field for MVTC23053 0.528X Telecentric Lens f/# Depth of Field 4.6±1 mm7±1.15 mm12±1.5 mm22±2.5 mmField of View for MVTC23053 0.528X Telecentric Lens Sensor Format Field of View (Full) 1/3"11.4 mm1/2"15.1 mm1/1.8"16.9 mm2/3"20.8 mmMVTC23100Depth of Field for MVTC23100 1.00X Telecentric Lens f/# Depth of Field 5.6±0.9 mm8±1.3 mm11±1.8 mm16±2.6 mmField of View for MVTC23100 1.00X Telecentric Lens Sensor Format Field of View (Full) 1/3"6.0 mm1/2"8.0 mm1/1.8"8.3 mm2/3"11.0 mmMVTC23200Depth of Field for MVTC23200 2.00X Telecentric Lens f/# Depth of Field 3.7±0.3 mm8±0.6 mm16±1.3 mm32±2.6 mmField of View for MVTC23200 2.00X Telecentric Lens Sensor Format Field of View (Full) 1/3"3.0 mm1/2"4.0 mm1/1.8"4.2 mm2/3"5.5 mm Key SpecificationsaItem #MVTC23005bMVTC23013MVTC23024MVTC23053 MVTC23100MVTC23200Magnification0.051X0.128X0.243X0.528X1.00X2.00XWorking Distancec530 mm176 mm103 mm44 mm62.2 mm55.9 mmDepth of Fieldd±260 mm±15 mm±11 mm±1 mm±0.9 mm±0.3 mmField of View for 2/3" Format Sensor (Full)e214 mm86.2 mm45.2 mm20.8 mm11 mm5.5 mmModulation Transfer Function (MTF)f51%55%51%51%42%39%Sample Test Report Lens MountC-Mount (1.000"-32)Lens Lengthg,h24.84" (630.8 mm)11.13" (282.8 mm)6.36" (161.6 mm)5.29" (134.4 mm)2.58" (65.6 mm)4.05" (102.9 mm)Lens Housing Diameter at Largest Pointh?9.44" (?239.8 mm)?4.06" (?103.0 mm)?2.60" (?66.0 mm)?1.45" (?36.8 mm)?1.48" (?37.7 mm)?1.48" (?37.7 mm)Weight13.0 kg (28.7 lbs)b1.7 kg (3.7 lbs)0.61 kg (1.34 lbs)0.7 kg (1.5 lbs)0.18 kg (0.40 lbs)0.26 kg (0.56 lbs)完整规格请查看规格标签。MVTC23005装载在耐重手提箱内。工作距离定义为从第 一个透镜表面到景深中心。设定在20 lp/mm,50% MTF, 通光孔径。视场规定为沿探头对角线方向。其它规格探头的视场值可以在规格标签中找到。设定在70 lp/mm,穿过视场。不包括C安装座详细信息请点击产品编号旁边的红色文件标签。Item # MVTC23005 MVTC23013 MVTC23024 MVTC23053 MVTC23100 MVTC23200 Magnification 0.051X 0.128X 0.243X 0.528X 1.00X 2.00X Magnification Error± 1%± 2%± 1%± 1%± 1%± 1%Image Diagonal11 mm (2/3" Format)Working Distancea530 mm176 mm103 mm44 mm62.2 mm55.9 mmDepth of Fieldb±260 mm±15 mm±11 mm±1 mm±0.9 mm±0.3 mmWorking f/#cf/8f/7f/8f/7f/11f/11System f/# f/7.7 - f/22f/6.2 - f/22f/6.5 - f/22f/4.6 - f/22f/5.6 - f/16f/3.7 - f/32Field of View for 2/3" Format Sensor (Full)d214 mm86.2 mm45.2 mm20.8 mm11 mm5.5 mmTelecentricity0 ± 0.03°0 ± 0.01°0 ± 0.04°0 ± 0.17°0 ± 0.04°0 ± 0.02°Max Distortion0 ± 0.03%0 ± 0.01%0 ± 0.02% 0 ± 0.035%0 ± 0.002%0 ± 0.01%Modulation Transfer Function (MTF)e51%55%51%51%42%39%Coherent Transfer Function (CTF)e63%67%63%62%54%49%Image NA0.06140.0710.0620.0710.0450.045Object NA0.003150.00910.0150.0380.0450.090Lateral ColorR-G: 1.7 μm B-G: 0.08 μmR-G: 2.8 μm B-G: 1 μmR-G: 1 μm B-G: 1 μmR-G: 3 μm B-G: 1 μmR-G: 1.7 μm B-G: 0.05 μm R-G: 2.3 μm B-G: 0.4 μmAverage Transmittance96%f97%f97%f97%f94%f93%gLens MountC-Mount (1.000"-32)Lens Lengthh,i24.84" (630.8 mm)11.13" (282.8 mm)6.36" (161.6 mm)5.29" (134.4 mm)2.58" (65.6 mm)4.05" (102.9 mm)Lens Housing Diameter at Largest Pointi?9.44" (?239.8 mm)?4.06" (?103.0 mm)?2.60" (?66.0 mm)?1.45" (?36.8 mm)?1.48" (?37.7 mm)?1.48" (?37.7 mm)Lens Weight13.0 kg (28.7 lbs)1.7 kg (3.7 lbs)0.61 kg (1.34 lbs)0.7 kg (1.5 lbs)0.18 kg (0.40 lbs)0.26 kg (0.56 lbs)工作距离定义为从第 一个透镜表面到景深中心。 设定在20 lp/mm, 50% MTF, 通光孔径。不同通光孔径的景深由下表给出。工作f/#值用于决定其它规格除非其它特别说明。视场规定为沿探头对角线方向。其它规格探头的视场值可以在下表中找到。定为70 lp/mm,横穿视场。定为460 nm - 630 nm.定为486 nm - 656 nm.不含带螺纹的C型安装座。 Item #Lens MagnificationField CurvatureDistortionRelative Illumination @ 588 nmMTFMVTC230050.051X f/7.7f/11f/22MVTC230130.128Xf/6.2f/12f/22MVTC230240.243Xf/6.5f/12 f/22MVTC230530.528Xf/4.6f/7f/22MVTC23100 1.00Xf/5.6f/8f/16MVTC232002.00Xf/3.7f/8f/32
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